The difference is a woman’s consent to allow the use of her body by another person.
Consent is given when you had sex. Don’t have sex if you don’t want a baby. You don’t get to kill it because you made bad choices. I’m okay with early abortion in the case of rape and life threatening health issues of the mother.
The woman has every right to deny consent to any person using her body.
Just because she lets a guy have sex with her, doesn’t mean somebody else has the right to show up too.
Considering birth is a direct consequence of having sex, yes I would say a woman should be aware that they can get pregnant. You don’t have to have sex, and you don’t get to kill a baby because you were irresponsible.